تسجيل الدخول
DWT versus WP Based Optical Color Image Encryption Robust to Composite Attacks
تاريخ النشر
06/05/2017 12:00:00 ص
149
المؤلفون
M.A. Mohamed1, A.S. Samarah1, M.I. Fath Allah2
الوصف
Hindawi Advances in OptoElectronics Volume 2017, Article ID 9802751, 15 pages
URL
https://doi.org/10.1155/2017/9802751
DOI
https://doi.org/10.1155/2017/9802751
الملخص
Intensive studies have been done to get robust encryption algorithms. Due to the importance of image information, optical encryption has played a vital role in information security.Many optical encryption schemes have been proposed but most of them suffer from poor robustness. In this paper six proposed algorithms will be presented for optical encryption to be robust to severe attacks: composite attack. Three of these approaches are based on one level DiscreteWavelet Transform (DWT) and the others are based onWavelet Packet (WP).Not only will new techniques be presented but also a new proposed chaotic map has been developed as random keys for all algorithms. After extensive comparative study with some traditional techniques, it has been found that the novel algorithms have achieved better performance versus conventional ones. Also it has been found that WP based algorithms have achieved better performance than DWT based ones against severe composite attacks.
الكلمات الدالة
RGB, DWT, WP, Optical Encryption